[DeTomaso] Remote oil filter setup

Thomas Tornblom Thomas.Tornblom at hax.se
Wed May 6 07:42:14 EDT 2009


MikeLDrew at aol.com skrev:
> In a message dated 5/5/09 15 40 53, boyd411 at gmail.com writes:

> 
>> I would think that a higher
>> volume of oil flow would be preferential. My logic may be flawed but the
>> more oil volume flowing through the system the less time it has to get 
>> over
>> heated and the greater volume being pushed through the filtration system 
>> the
>> more often the total volume is going to be cycled through the entire 
>> system
>> and completely filtered. 
>>
>>>> More is better to a point--but then it becomes too much.   The problem 
> with high-volume oil pumps is that they draw oil out of the oil pan faster 
> than gravity lets it drain back down into the pan.   The drain holes in the 
> heads/block provide a finite drain-back capacity, which can easily be exceeded 
> by a high-volume oil pump.   Extended high-rpm running can literally pump 
> all the oil to the top of the engine, flooding the valve covers, and then 
> starving the pickup in the pan, so that the pressure then drops towards zero.

Not really. Any oil pump in a reasonably healthy motor has enough 
capacity to force the by-pass valve in the pump to open at normal 
cruising rpms, which makes the oil circulate in the pump. A high volume 
pump achieves this quicker, at the cost of increased load on the cam and 
heat buildup.

With a given oil pressure at the pump, the same amount of oil will flow 
through the motor regardless if you have a normal or high-flow pump, so 
there can be no more oil in the top of the engine.

With a high-pressure pump you will force more oil through the motor, and 
you may end up with more oil in the top end.

If you install a remote filter and suffers from a pressure drop through 
the lines, then a high-pressure pump can be use to overcome the drop so 
that the pressure in the motor is still acceptable. A high-volume pump 
will not achieve that.


Thomas



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